Fluid-distributer.



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v Patented Dec. 19, 1916.

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APPLICATION FILE() MAY l, l9l3. Y 1,209,579. Patented Dee. 19, 1916. 4 SHEETS-SHET s.

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Hfs ATTORNEY IN FACT H. T. HERR.

FLUID DISTRIBUTER. APPLICATION man AY l. |913.

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HERBERT T. HERR, OF PITTSBURGH, PENNSYLVANIA, ASSIGNOR, BY MESNE ASSIGN- MENTS, TO THE WESTINGHOUSE MACHINE COMPANY, 0F EAST PITTSBURGH, PENN'- SYLVANIA, A. CORPORATIUN OF PENNSYLVANIA.

FLUID-DISTRIBUTER.

Specication of Letters Patent.

Patented Dec. 19, 1916.

Application led May 1, 1913. Serial No. 764,846.

To all whom t may concern:

Be it known that I, HERBERT'T. HERR, a citizen of the United States,`and a resident of Pittsburgh, in the county of Allegheny and State of Pennsylvania, have made a new and useful Invention in Fluid-Distributors, of which the following is a specification.

This invention relates to means for controlling engines or the like from a distance, and particularly to a pressure distributing device, one of the objects of which is to provide means whereby a. determined pressure will be exerted against a pressure actuated device affected by the distributer.

Another object is to provide means for controlling the distributer so that any given pressure may be maintained.

.Another object is to provide a distributer having a self-contained regulating means.

It is also the object of the invention to provide manually controlled means for directing the distribution of the pressure to one of a plurality of conduits and for selecting the particular conduit through which pressure is to be directed.

Another object of the invention is to provide means whereby uid pressure may be 'exhausted from one conduit when Huid pres su e is admitted to another conduit.

ther objects and advantages will, be specifically described hereinafter, it being understood that changes in form, proportion and minor details of construction may be resorted to without departing from the spirit of the invention or sacrificing any of the advantages thereof.

In the drawings: Figure 1 is a sectional view on the line 1-1 of Fig. 2 looking in the direction of the arrows; Fig. 2 is a sectional view on the line 2-2 of Fig. 1 looking in tbe direction of the arrows; Fig. 3 1s asection on the broken line 3 3 of Fig; 1 looking in the direction of the arrows; Fig. 4 is an enlarged sectional view of the air-admitting inechanism; and, Fig. 5 is a fragmentary detail of the segment and operating handle:

Referring now to the drawings by numerals of reference: 10 indicates the casing having removable ends 11 and 12 between which and the ends of the intermediate portion of the casing 10 are secured diaphragme 13 arid 14; one of e ends,-in the present instance, the one designated by the reference f 4numeral12,-;,isprovided with an inlet :15

adapted t0 be closed by a valve 16 having a Stem 17 and capable of being seated by a spring 19 surrounding the stem and having one end bearing against the cap Q0 and the other against the valve. The valve l0 .may be unseated by the diaphragm 14 and srl-.lied by the spring 19. On the exhaust sido of the casing and carried by the diaphra e 5P is a valve 24 adapted to close the out fi l exhaust 25 of the distributor. and the rim phragms are provided with guides 2U alii] 2T which telescope one Within the other. The movement of the diaphragm 14 is limited in .i one direction by the valve 16 and in the other direction by the flange 14a provided with a cut-out portion 14" to let air pass when the diaphragm 14 is against it. The distributer is provided with an inlet port 29 which admits air under pressure to the interior thereof between the two diaphragme 13 and 14 into a central equalizing chamber 30. The intermediate chamber is subdivided to provide an exhaust chamber 31 which under certain conditions may have communication with the chamber 30, and which exhausts to atmosphere through a suitable port, as for example, the port 32, best shown in Fig. 1. The exhaust chamber 31 is shown as being approximately rectangular` in cross-section (see Fig. This exhaust chamber is shown as comprising a bottom 33, sides 34 and 34', and a top portion 35. The top portion is provided with bearings 36 to receive a spin,- dle or shaft 37 on which is a cam 38 adapted toturn with the shaft so as to operate a valve actuating rod 39, best shown in Figs. 1 and 4. The rod 39 is illustrated as comprising a tube having one end 40 closed by a plug adapted to bear against the cam 38. The tube or hollow rod 39 is provided with openings 41 always registering with the inlet port 29 so that air ma pass from the port 29 into the tube. The tu e is normally closed at the end farthest from the point 4() by a piston valve 42, and slides in a piston 48 which is provided with openings 44 adapted to register with openings 45 in the tube. The valve 42 for the tube 39 is adapted to cover fifi a central port 46 in the piston through which .4

which is a coilspring 50, one of which? bears against the valve 42 and the other` are out of alincment so that when the ahead against a spring scat 51 in the piston 43. stage valve mechanism 1s to be operated by One" end of the piston 413 is to be provided air pressure, the handle 68 will be moved with a point bearing 52 which seats against toward the casing so as to cause the valve a spring pressed seat One end of a coil 59 to shut off communication between the 70 spring 54 abuts against seat 5B and one end port 58 and the port 61, and open communr bears against a screw plug 55 in the main cation between the port 58 and the port 60. casing, the screw plug 55 being adapted to In this position air will flow from the port be used as an adiustment for varying th'l 58 to the port 60 to the ahead stage valve tension of the spring 54. mechanism, but should it be desired to oper 75 By'reference to Figs. l, 2, and 3 it will be ate the astern stage valve mechanism1 the observed thatl the inlet and exhaust chamhandle 68 will be moved into the slot 76 so bers formed by the intermediate section 10 as to shift the valve 59, clling communicaand the ends 1l and 12 are connected by a tion between the port 58 and the port 60 passage 56 which permits the two end chamand opening communication between the @e ers to bein communication with the air port 58 and the port 61 se that air will flow chest 57 through the medium of the said only to the astern stage valve mechanism. passage 56 and a passage 58, there being a When one of the ports 60 or 61 is in comdistributing valve 59 in the air chest, as munication with the port 58, the other will best shown in Figs. l and,`3. In addition be exhausting as indicated by the arrows in 85 to the port 58 there is a port 60 which leads Fig. 1. The exhausted air will pass directly from the air .chest to a suitable conduit (not into the exhaust chamber 31 and pass oil' to shown) which may be connected to an eleatmosphere through the port 32.

ment to be actuated bv Huid pressure, as for The amount of pressure which is supexample, to the ahead stage valve of a tiirplied to either of the valve actuating mecha- 9o bine. There is also a port 61 through which nisms will be determined by the position air may exhaust from the air chest to a suitof the handle on the segment 74 for which able element to bc actuated, as for example, purpose the segment may be graduated or toan astern stage val-ve vof a turbine, it becalibrated for difference of pressure from ing` understood, of course, that these conzero to the maximum pressure within the 95 duits may connect to some valve actuating pressure supplying medium. For example, mechanism, as for example, a relay or valve if the handle 68 is moved to a point on the motor. segment corresponding` to 10 pounds pres- The valve 59 is in the form of a D-valve sure, the shaft 37 will be rotated in the l and is caused to bear upon its seat 62 by a bearing 36 so as to cause the cam 38 to move 10o spring 63 which bears against said valve. the hollow rod or tube 39 ina direction 1n- The valve 'is shown :is being connected to a dicated by the arrow so as cause the end 42, stem 64 loose on the 'shaft 37 which carries` which is reallya valve, to open communicathe cam 38so that when the rod or shaft 37 tion between the tube and a port 79 which A is rotated by the handle 68 the stem 64 will communicates with the central chamber 80 105 not be disturbed, so that when the handle 68 until 10 pounds pressure exists in the cenis moved to rotate the shaft 37, or partially tral chamber 30, in which event the presrotate it, the am 38 will actuate the rod B9 Sure against the end 43 of the piston 43 but will leave the valve undisturbed, the will move the piston against action of the N5 valve being actuated only by a longitudinal spring 54 so vas to close communication be- 110 motion of the shaft 38. The supply chamtween the central chamber and the source of ber 12 is connected to a', suitable-source of supply due to the fact that the valve 42 is supply throu h the port 69 by a connecting lapped; and while the interior of `the tube passage 70 gsce Fig. 2), and the exhaust 39 is always in communication with the port passage 71 for the chamber 11* is connected .29 through the o enings 41 air can -get into 115 to the exhaust chamber 31 through a conthe central cham er only when the ports 44 necting passage 72. are uncovered by the valve 42. Suppose th`e rIfhe s aft'37 '1s rotatable in a bush 73 handle is set for '10 pounds pressure when which supports a segment 7 4 carrying seleca pressure of 10 pounds occursin the chamtive slots, in one of which will move the ber 30 the pressure exerted against the dia` 12o handle (B8-when one Huid actuating element phragn i 14 will unseat the valve 16 and 1s to be operated, as for examv le the aheadv pause air under pressure. to pass from the stage valve" mechanism, and in-the other of supply port 29 through port 7i) throu 'hf which the handle willmove when another port 69, pass the unseated .valve into` t e fluid actuated device is to'be controlled, 'as chamber 12" through the passage 56 over 125 for example.;4 the asterix stage valve mechato the exhaust side 11" of the casing 'into the nisin of a turbine; one of tie slots is desig air chest 57from which it may be distrib. nated by the reerence numeral and utcd toV the4 airv actuated device `to be conother bythe reference'num iral 76 (see Fig. trolled. When the pressure in the chamber l es t). It will be observed th .tt'hese two slots 12 is equal to 10 pounds, the pressures, on 130,y

opposite sides of the diaphragmel 13 and 14 will be equalizerl and the valve 16 will be closed by the spring 19 so that 10 pounds pressure will be maintained in the distributing system. Of course, there may be some little leak in the line` in which event the pressure in the end chambers .Will drop slightly causing the preponderating pres sure in the central chamber to again open the valve 16 to maintain the pressure approximately constant in the source of dis tribulion. If it is desired to add 20 pounds or any pressure in excess of that then existingr in the system, the handle will be operated to cause the shaft 37 to be rotated further so as to further unseat the valve 42 to admit more pressure to the central chamber. Suppose, however, it is desired to decrease the pressure: The handle will be reversed so as to turn the cam 38 and under the action of the spring 5U against the valve 42 communication will be established be tween the central chamber and the passage 46 while communication is shut oli between the central chamber and the interior of the tube 39. Air will then exhaust from the central chamber through the central passage in the piston out through the ports 47 around the spring seat 53, through passage 48 to the exhaust chamber 31 and out to atmosphere through port 3Q. This is best shown in Figs. 1 and 4. If there is 30 pounds pressure existing in the central Y chamber and the handle is moved to a suiti haast valve 24 and permit able point to indicate that 15 pounds pressure is to be exhausted, the cam will be r0- tated so as to permit the hollow rod or tube to move under the action of the spring a sulicient distance lto unlap the exhaust port so that 15 pounds pressure may exhaast, at which time the piston under the action of the spring 54 will close oil' communication between the exhaust and the central chamber, and 15 pounds pressure will be maintained in the central chamber. The reduction of pressure in the central chamber will essentially `cause a reduction of pressurein the line. for if 15 pounds pressure is exhausted from the central chamber there wili be a preponderance of 15 pounds pres euri` on the outer sides'of the diaphragms. The preponderance of pressure Will theretore cause the diaphragm 13 to move toward #he diaphragm 14 so as to unseat the exair to exhaust .into the passage 71 and out through the exhaust until an equilibrium of pressure is established between the central chamber Mil the two end chambers, at which time if: the pressure in the system will be maintained at 15 pounds. It that with all the order it will only shaft 3T so as to will be apparent parts in proper Working be necessary to rotate the cause the cam to control c5 the position of the tube 39 to maintain any pressure in the System, and that a slight reciprocation 0f the shaft 37 due t'o thc particular slot in which be will what I claim 1s:

determine into which or 61, the air is to be distributed.

Havingr thus described my handle 68 happens to port, that is,

70 lnventlon,

1. In a pressure distributing device, a casing having a central chambers, Hexible Walls separating the end chamber and two end chambers from the central chamber, means for admitting pressur e to the two end chambers and connected to one of the iexible walls, means for exh the end chambers an the flexible Walls,

austing pressure from d connected to one of 30 and means within the casing for controlling the delivery of air pressure to the central chamber.

end chambers, said rated by flexible wal connected to said iexible walls an for admitting pressur ber` said means being contained within the a sliding port closing casingrv and having valve.

pressure distributing device, a casing having a central chamber and two chambers being sepals, port closing valves means e to said central cham- 3. In a device'of the class described, a casing port walls for admitting and exhaustingfpressure to and from said end chambers,

a 4plurality of ports in communication with the end chamers, means for valv for admitting a determined'air pressure to the central chamber,

and a manually controlled means connected to the air admission means for the central means for valving the direct the air from the determined port.

chamber and to the said ports'so as to 105 end chambers to a 4. An apparatus for controlling the delivery of fluid under tuated mechanlsm,

pressure to a Huid accomprising a chamber from which pressure is delivered to the mechanism, pressure responsive means for controlling,r the degree of pressure within the chamber,

.a manually adjustable pressure control valve for controlling the delivery of actuatmg sponsive means, and

pressure to said pressure rea device, movable in response to variations of pressure to which said pressure responsive means are subjected,

for controlling the delivery of fluid past said valve.

5. An apparatus for livery of fluid under tuated mechanism,

controlling the depressure to a fluid aceomprising a pressure chamber from which Huid is delivered, a

control mechanism amount of pressure in for controlling the said chamber, a valve sponsive means cope rating with said valve 13o l sa for maintaining di'erent determined fluid pressures on said control mechanism foreach position of said valve.

6. An apparatus for controlling the delivery of iluid under pressure to a. ui actuated mechanism, comprising a pressure chamber from Whic fluid is delivered to said mechanism, diaphragm actuated valves for controlling the delivery of pressure to and the discharge of pressure from said chamber, a valve for controlling the delivery of actuating pressure to said diaphragme, and means responsive to pressure admitted to said diaphragms for maintaining a dilicrent determined pressure on the diaphragms for each position of said valve.

7. An ap aratus for controlling the supply of fluid under pressure, comprising a pressure delivery chamber in open communication with a delivery passage, in combination with a source of pressure inlet valve between said source o supply and said chamber for delivering lluid under ressure to said chamber, a discharge valve or discharging pressure from said chamber, independent pressure responsive means tor se arately controlling the operation ot said va ves, a manually controlled valve for delivering the controlling pressure to said pressure responsive means, an a pressure res onsive device for limiting the pressure delivered by said valve to said pressure responsive means.

8. An apparatus for controlling the supply et fluid under pressure, comprising a pressure delivery chamber in open communication with a pressure supply passage, in combination with a source of fluid supply, independent valves for controlling the de livery of fluid from said source to said chamber, and the discharge of fluid from said chamber, independent pressure responsive means for controlling the operation of each of said valves, a pressure chamber for subjecting said pressure responsive means to operating pressure, a manually controlled valve forcontrolling the delivery of pressupply, an

sure to, and the discharge of pressure from said pressure chamber, and means subjected to the pressure within the chamber and. cooperating with said valve lfor limiting the pressure variation within the pressure chamber.

9. An apparatus for controlling the delivery of tluiil under pressure, comprising a pressure deli very chamber in open com'rnunication with a pressure supply passage. independent sprlug pressed valves for controlling the delivery of fluid to, and the discharge of fluid from said chamber, separate pressure responsive means for controlling: the operation ot' euch valve, a manually operated valve for controlling the delivery of pressure to said pressure rcspbnsivc means, und a pressure responsive device for limitingr the pressure to which. said pressure responsive means is subjected to a definite pressure for each position Qi the valve.

l0. An apparatus for controlling the delivery of fluid` under pressure` comprisingI u pressure delivery chamber in open coumiuuication with a pressure supply passage, in combination With a source of fluid ruessure, separate valves for controlling the delivery of fluid pressure from said source to said chamber and the discharge of fluid to the atmosphere from said chamber, a separate pressure actuated valve operating diaphragm for each valve, a chamber for subjectingr said diaphragms to actuating pressure, a valve for admitting pressure from said source to said pressure chamber, automatic means for limiting the pressure within said pressure chamber to a definite pressure for each position of the vulve and a spring located between each valve and its operating` diaphragm 'for holding'` the valve on its seat.

In testimony whereof. I have hereunto subscribed my name this 23rd day ot' April, 1913.

HERBERT T. HERR.

llfitnesses:

C. W. lvloGusr., B. F. FUNK. 

